修了很多bug和增加功能，优化不少问题

Assets/artworks/gamePlay_gamePlay/321go/readyLetsGo.cs

@@ -17,6 +17,9 @@ public class readyLetsGo : MonoBehaviour
     public float startScale = 1.25f;
     public float endScale = 0.8f;
 
+    [Header("Gameplay Track Intro")]
+    public GameplayTrackStartIntroAnimator gameplayTrackStartIntroAnimator;
+
     private Coroutine sequenceCoroutine;
 
     // Prevent re-entry / accidental double-play
@@ -58,6 +61,15 @@ public class readyLetsGo : MonoBehaviour
         isPlaying = false;
         lastPlayedTime = -10f;
         playedOnce = false; // allow one play when player initiates
+
+        if (gameplayTrackStartIntroAnimator == null)
+        {
+            gameplayTrackStartIntroAnimator = FindAnyObjectByType<GameplayTrackStartIntroAnimator>();
+            if (gameplayTrackStartIntroAnimator == null)
+            {
+                gameplayTrackStartIntroAnimator = gameObject.AddComponent<GameplayTrackStartIntroAnimator>();
+            }
+        }
     }
 
     /// <summary>
@@ -93,6 +105,12 @@ public class readyLetsGo : MonoBehaviour
 
         isPlaying = true;
         lastPlayedTime = Time.unscaledTime;
+
+        if (gameplayTrackStartIntroAnimator != null)
+        {
+            gameplayTrackStartIntroAnimator.PlayIfNeeded();
+        }
+
         sequenceCoroutine = StartCoroutine(PlaySequenceCoroutine());
     }
 
@@ -251,5 +269,6 @@ public class readyLetsGo : MonoBehaviour
             try { StopCoroutine(sequenceCoroutine); } catch { }
             sequenceCoroutine = null;
         }
+
     }
 }